Cylindrical roller bearings have roller that provide a modified line contact with the cylindrical inner and outer ring raceways, while the rollers are guided by ground ribs on either the inner or outer ring. The cylindrical shape allows the inner ring to have axial movement relative to the outer ring. Material: chrome steel Number of Row: double, single Cage: brass, steel Model Number: NU212E, NU213E Brand Name: NKS, SXYZ and follow customer's request Inner Diameter: 60-65 mm Outside Diameter: 110-120 mm Width: 22-23 mm Precision Rating: P0,P6,P5,P4,P2 Service: OEM and customized service Certification: ISO:9001-2008